u663.us - robtex.com
u663.us
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::ac43:d774🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:32f9🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.50.249Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.215.116🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | nolan.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c38🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nolan.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c338🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | nolan.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2338🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | nolan.ns.cloudflare.com | ||||||
| A | 108.162.195.56🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nolan.ns.cloudflare.com | ||||||
| A | 162.159.44.56Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nolan.ns.cloudflare.com | ||||||
| A | 172.64.35.56🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nolan.ns.cloudflare.com | ||||||
| NS | riya.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:269b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | riya.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c29b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | riya.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:229b🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | riya.ns.cloudflare.com | ||||||
| A | 108.162.194.155🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | riya.ns.cloudflare.com | ||||||
| A | 162.159.38.155Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | riya.ns.cloudflare.com | ||||||
| A | 172.64.34.155🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | riya.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.50.249, 172.67.215.116 | ||||||
| IPv6 hints | 2606:4700:3032::ac43:d774, 2606:4700:3033::6815:32f9 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=198, name=cloudflare-ech.com | ||||||
| SOA | nolan.ns.cloudflare.comdns@cloudflare.com serial=2400672791 | ||||||
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1776227850 | ||||||
Same first word
u663.us |
Similar names
DNS History
6 records (6 active, 0 former)
●NSnolan.ns.cloudflare.com2026-03-31 → 2026-04-15 · 2 obs
● 2026-04-15 04:54:16
●NSriya.ns.cloudflare.com2026-03-31 → 2026-04-15 · 2 obs
● 2026-04-15 04:54:16
●A104.21.50.2492026-03-31 → 2026-04-15 · 2 obs
● 2026-04-15 04:54:16
●A172.67.215.1162026-03-31 → 2026-04-15 · 2 obs
● 2026-04-15 04:54:16
●A2606:4700:3032::ac43:d7742026-03-31 → 2026-04-15 · 2 obs
● 2026-04-15 04:54:16
●A2606:4700:3033::6815:32f92026-03-31 → 2026-04-15 · 2 obs
● 2026-04-15 04:54:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | b.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us... | - |
| u663.us | riya.ns.cloudflare.com, nolan.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.34.155
NS records: riya.ns.cloudflare.com, nolan.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for u663.us (unsigned zone)
⏱️ Timing
Total: 2210ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.50.249, 172.67.215.116 |
| AAAA | 2 | 2606:4700:3033::6815:32f9, 2606:4700:3032::ac43:d774 |
| NS | 2 | nolan.ns.cloudflare.com, riya.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | nolan.ns.cloudflare.com dns.cloudflare.c |
Analysis
IP Addresses
u663.us points to four IP numbers: 2606:4700:3032::ac43:d774, 2606:4700:3033::6815:32f9, 104.21.50.249 and 172.67.215.116.
Other host names including tianyujc.com, demo.salessurvey.de, dovembistro.com, gtatnt.com and forums.ro share IP numbers with u663.us.
Name Servers
u663.us's delegation uses two name servers, nolan.ns.cloudflare.com and riya.ns.cloudflare.com.
u663.us shares the same name server setup as other domains, for example stockwellceramics.co.uk, gravity-lounge.com, s4dom.com, famosasnuasvip.com and (0x78766964656f73)(0x706f726e)obrasileiro.com.
u663.us at least partially shares name servers with other domains, including ca-valdeurope.fr, maqnelsonirrigacao.com.br, ag-drive.com, glo6.com and thegaragedoorlock.com.
these name servers are commonly used together with barbara.ns.cloudflare.com, michael.ns.cloudflare.com and simone.ns.cloudflare.com.
Host names with six IP numbers:
nolan.ns.cloudflare.com points to: 2606:4700:58::a29f:2c38, 2803:f800:50::6ca2:c338, 2a06:98c1:50::ac40:2338, 108.162.195.56, 162.159.44.56 and 172.64.35.56.
riya.ns.cloudflare.com points to: 2606:4700:50::a29f:269b, 2803:f800:50::6ca2:c29b, 2a06:98c1:50::ac40:229b, 108.162.194.155, 162.159.38.155 and 172.64.34.155.